Google Docs actually creates a bookmark for each heading from the document and displays the bookmarks hierarchically using lists. Unsurprisingly, when you open the document in Microsoft Word, the application treats the table of contents created in Google Docs as a list.

You can find more information about a word directly from Google Docs: click on the Tools menu and look up the word in Merriam-Webster's dictionary and thesaurus and in Encyclopædia Britannica.

In the Tools menu, there are two other options that allow you to search the web for the selected text. It would be nice to see the results in a pop-up box and to link to them directly from Google Docs, but this is not yet possible.

I haven't tried it as of yet, but I would like to know if for texts in other languages than English, dictionaries, thesaurus and encyclopaedias are contained in the menu ? Or must such tools be added by the user by means of bookmarking the links of online dictionaries in the respective language ?I write a lot in French.